FlightGear Flight Simulator: free open-source multiplatform flight sim
Real-time 3D visualization of space
3D modeler, 3D game maker, 3D demo maker
The programmer's solid 3D CAD modeller
Live shader coding tool and Shader Showdown workhorse
3D representations of flowers, flower elements, bouquets or meadows
Tao3D is a programming language for real-time interactive 3D
A tool that uses OpenCL to procedurally generate 3D models
Fancy interactive fluid simulation for gfx fans, VJs and demo coders
Standalone software for photo editing and digital painting.
A Library for Interactive Modelling and Visualisation